303213442 has 16 divisors (see below), whose sum is σ = 526059072. Its totient is φ = 128382480.

The previous prime is 303213433. The next prime is 303213451. The reversal of 303213442 is 244312303.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (303213433) and next prime (303213451).

It is a super-3 number, since 3×303213442³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129309 + ... + 131632.

It is an arithmetic number, because the mean of its divisors is an integer number (32878692).

Almost surely, 2^303213442 is an apocalyptic number.

303213442 is a deficient number, since it is larger than the sum of its proper divisors (222845630).

303213442 is a wasteful number, since it uses less digits than its factorization.

303213442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261033.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 303213442 is about 17413.0250674603. The cubic root of 303213442 is about 671.8146707020.

Adding to 303213442 its reverse (244312303), we get a palindrome (547525745).

The spelling of 303213442 in words is "three hundred three million, two hundred thirteen thousand, four hundred forty-two".